Ben sets out to create a second revision of the Raspberry Pi MAME portable gaming device. This time he has a better display, a newer Pi, and an improved charging circuit. In this episode he gets the Pi set up as a MAME device by installing the CupCade OS on an SD card, configuring the GPIO as game control buttons, and connecting it to the Adafruit TFT screen. Once everything is working, Felix makes a custom PCB based on how Ben designs the unit.